CN110237672A - A kind of vulcanizing agent removing hydrogen sulfide - Google Patents
A kind of vulcanizing agent removing hydrogen sulfide Download PDFInfo
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- CN110237672A CN110237672A CN201910477221.0A CN201910477221A CN110237672A CN 110237672 A CN110237672 A CN 110237672A CN 201910477221 A CN201910477221 A CN 201910477221A CN 110237672 A CN110237672 A CN 110237672A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
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Abstract
The present invention relates to desulfurizing agent fields, more particularly to a kind of desulfurizing agent for removing hydrogen sulfide, in parts by weight, desulfurizing agent includes following raw material part: 70-90 parts of nanoscale zinc ferrite, 5-20 parts of binder, 5-10 parts of transition metal promoter, by by nanoscale zinc ferrite, the desulfurizing agent that binder and transition metal promoter are prepared according to a certain ratio, Atomic Arrangement is close, stable crystal form, so that desulfurizing agent has high mechanical strength, active component not easily runs off, the good feature of water-resistance, and the hydrogen sulfide content in ammonia can be made to be down to 0.01 μ g/g or less, so as to meet the sulfur-bearing requirement of chemical industry liquefied ammonia and environmental protection.
Description
Technical field
The present invention relates to desulfurizing agent fields, and in particular to a kind of desulfurizing agent for removing hydrogen sulfide.
Background technique
In the industrial processes of petroleum refining, due to containing more sulphur-containing substance in raw material, in process of production,
Sulphur-containing substance, which reacts, can release a large amount of hydrogen sulfide, therefore sewage stripping device would generally be arranged in oil plant to oil refining
The sulfur-bearing sewage containing ammonia of factory's each process units discharge is purified, while recycling hydrogen sulfide and ammonia, wherein after vulcanizing hydrogen retrieval by
Sulfur recovery facility produces sulphur, and ammonia then compresses production liquefied ammonia by ammonia compressor or directly produces ammonium hydroxide.
It, can be to profit after entering ammonia compressor due to also containing moisture, hydrogen sulfide and other impurities in the ammonia of recycling
Oil system causes strong influence, keeps emulsification of lubricant rotten, and ammonia can react with hydrogen sulfide and generate crystal blocking oil
Road makes ammonia compressor fully cannot lubricate and cool down, and then results in the need for carrying out compressor parking maintenance, therefore by ammonia
Gas usually requires to carry out purification removing to hydrogen sulfide before being delivered to ammonia compressor.
Currently, domestic Ammonia purification system generallys use crystallisation adsorption or concentrated ammonia liquor circulation two kinds of techniques of washing, but in essence
10 μ g/g, sometimes even up to 100 μ g/g or more are still greater than in hydrogen sulfide content in ammonia after system, and index request is not achieved, therefore
Further to remove the hydrogen sulfide in ammonia, it usually needs increasing a set of dry method fixed bed fine de-sulfur device in above-mentioned technique makes
Hydrogen sulfide content in ammonia is down to 3 μ g/g hereinafter, to meet the sulfur-bearing requirement of chemical industry liquefied ammonia and environmental protection.
The basic principle of dry desulfurization is the reaction that is in contact using gas-solid, by solid desulfurizing agent by hydrogen sulfide adsorption or
Reaction is solid sulphur or sulfide.But that there are Sulfur capacity is not high for existing desulfurizing agent, the problem of low precision, in practical application
In, intensity is low, and Yi Fenhua, in the presence of water, water-resistance are poor, and active component is easy to run off, while desulfurizing agent is easy to appear mud
Change phenomenon.
Summary of the invention
Therefore, it the technical problem to be solved in the present invention is that overcoming low Sulfur capacity, low precision, intensity of desulfurizer low, applied
Easily occurs the defects of dusting, water-resistance is poor in journey, to provide a kind of vulcanizing agent for removing hydrogen sulfide.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of desulfurizing agent removing hydrogen sulfide, in parts by weight, including following raw material part:
70-90 parts of nanoscale zinc ferrite
5-20 parts of binder
5-10 parts of transition metal promoter.
Further, the binder includes attapulgite, carboxymethyl cellulose, silica solution, kaolin, sheep dry ground and swollen
Moisten at least one of soil.
Further, the transition metal promoter include in copper oxide, nickel oxide, lanthanum sesquioxide and lanthanum nitrate extremely
Few one kind.
A kind of preparation method of desulfurizing agent, comprising the following steps:
By nanoscale zinc ferrite, binder and transition metal promoter kneading and compacting after mixing, through drying, roasting
After obtain desulfurizing agent.
Further, the nanoscale zinc ferrite is prepared according to following steps:
Zinc compound is prepared into zinc solution, and it is 7-8 that Ammonia substance, which is added, to adjust pH, and solution is warming up to 70-80
DEG C, iron containing compounds are configured to ferrous solution, and ferrous solution is poured into zinc solution with the rate of 5-6ml/min, are formed altogether
Sediment obtains nanoscale zinc ferrite after drying.
Further, the Ammonia substance is one or more of ammonium hydroxide, ammonium hydrogencarbonate, primary amine, secondary amine, tertiary amine.
Further, the zinc compound is at least one of nanometer zinc nitrate, alkaline carbonic acid zinc and zinc sulfate.
Further, the iron containing compounds are at least one of nanometer ferric nitrate, ferric sulfate and ferric phosphate.
Further, drying temperature is 100-110 DEG C, drying time 2-3h.
Further, maturing temperature is 150-200 DEG C, calcining time 2-3h.
Technical solution of the present invention has the advantages that
1. the desulfurizing agent of removing hydrogen sulfide provided by the invention, including with the mixed nanoscale zinc ferrite of certain proportion, glue
Tie agent and transition metal promoter, wherein nanoscale zinc ferrite had both had the high sulfur capacity of iron oxide, reaction speed fastly, easily again
Raw advantage, the characteristics of being also equipped with zinc oxide high desulfurization precision, meanwhile, nanoscale zinc ferrite has spinel structure, contains
Cation vacancy, it is easier to attract anion, the reaction of hydrogen sulfide and zinc ferrite can be made to be easier to carry out；Binder is on the one hand
The specific surface area and Kong Rong of desulfurizing agent can be increased, the desulfurizing agent enabled has flourishing pore structure, so that de-
Sulphur agent has more active sites to be exposed, and then desulfurizing agent is enable preferably to be reacted with hydrogen sulfide, reaches better
Desulfurization effect, on the other hand, binder itself have certain alkalinity, a part of active sites can be provided for desulfurizing agent, thus
The desulfurization performance of desulfurizing agent can be improved；On the one hand promotor can be doped in the lattice of zinc ferrite forms a kind of lattice and lacks
It falls into, reduces the activation energy that active component is reacted with hydrogen sulfide, and then improve the desulfurization precision and Sulfur capacity to hydrogen sulfide, another party
Face, the sulphur atom in hydrogen sulfide contain two pairs of lone pair electrons, and the promotor of addition belongs to transition metal, contains multiple skies in atom
Track, it is easier to be reacted with hydrogen sulfide, improve the desulfurization precision and Sulfur capacity of desulfurizing agent；By by nanoscale zinc ferrite, binder
And the desulfurizing agent that transition metal promoter is prepared according to a certain ratio, Atomic Arrangement is close, stable crystal form, so that de-
Sulphur agent have the characteristics that high mechanical strength, active component not easily run off, water-resistance it is good, and the hydrogen sulfide content in ammonia can be made
0.01 μ g/g is down to hereinafter, so as to meet the sulfur-bearing requirement of chemical industry liquefied ammonia and environmental protection.
2. the preparation method of desulfurizing agent provided by the invention, by by nanoscale zinc ferrite, binder and transition metal
Desulfurizing agent can be obtained after kneading and compacting in proportion in promotor after drying, drying, roasting, and preparation process is simple to operation, fits
In industrialized production.
3. the preparation method of nanoscale zinc ferrite provided by the invention, by using zinc compound and iron containing compounds
The mode of co-precipitation under conditions of neutral meta-alkali, by control reaction temperature and feed rate, is received by adjusting Ph
Meter level co-precipitate obtains nanoscale zinc ferrite after drying, method pH neutrality meta-alkali during the preparation process, to equipment corrosion
Small, feed rate is smaller, and the zinc ferrite particle of the Nano grade of preparation is smaller, and lattice is more complete, and maturing temperature is lower, saves energy
Source.
Specific embodiment
There is provided following embodiments is to preferably further understand the present invention, it is not limited to the best embodiment party
Formula is not construed as limiting the contents of the present invention and protection scope, anyone under the inspiration of the present invention or by the present invention and its
The feature of his prior art is combined and any and identical or similar product of the present invention for obtaining, all falls within of the invention
Within protection scope.
Specific experiment step or condition person are not specified in embodiment, according to the literature in the art described routine experiment
The operation of step or condition can carry out.Reagents or instruments used without specified manufacturer, being can be by commercially available acquisition
Conventional reagent product.
The present embodiment is related to a kind of desulfurizing agent of purification removing hydrogen sulfide, including the following raw material in parts by weight: receiving
70-90 parts of meter level zinc ferrite, 5-20 parts of bonding agent, 5-10 parts of transition metal promoter.
Wherein bonding agent is selected in attapulgite, carboxymethyl cellulose, silica solution, kaolin, sheep dry ground and bentonite
At least one, transition metal promoter select at least one of oxidation nickel oxide, lanthanum sesquioxide and lanthanum nitrate, bonding agent with
What transition metal promoter was selected is more common substance, and source is relatively broad, is easy to get.
The present embodiment further relates to a kind of preparation method of desulfurizing agent, comprising the following steps: by nanoscale zinc ferrite, bonding agent
And transition metal promoter kneading and compacting after mixing, then desulfurizing agent is obtained after drying, roasting.Preparation process is simply easy
Operation is suitable for industrialized production.
Wherein, nanoscale zinc ferrite is prepared according to the following steps to obtain: zinc compound being prepared into zinc solution, and is added
Ammonia substance adjusts pH to 7-8, then solution is warming up to 70-80 DEG C, and iron containing compounds are then configured to ferrous solution, and by iron
Solution is poured into zinc solution with the rate of 5-6ml/min, forms co-precipitate, then nanometer can be obtained in co-precipitate drying
Grade zinc ferrite, using this preparation method, during the preparation process, the pH of solution is 7-8, belongs to neutral meta-alkali, is corroded to equipment
Property it is smaller, charging rate is lower, can make preparation Nano grade zinc ferrite particle it is smaller, lattice is more complete.
Zinc compound in preparation process is at least one of nanometer zinc nitrate, basic zinc carbonate or zinc sulfate, ammonia
Substance be ammonium hydroxide and its derivative one or more of, such as: ammonium hydroxide, ammonium hydrogencarbonate, primary amine, secondary amine, tertiary amine etc..Contain
Iron compound is at least one of nanometer ferric nitrate, ferric sulfate and ferric phosphate, is all relatively conventional zinc salt or molysite.
Drying temperature when prepared by desulfurizing agent is 100-110 DEG C, drying time 2-3h, and maturing temperature is 150-200 DEG C,
Calcining time is 2-3h.
Embodiment 1
Embodiment 1 is related to a kind of desulfurizing agent of purification removing hydrogen sulfide, and desulfurizing agent is specifically prepared as follows:
S1, it prepares nanoscale zinc ferrite: basic copper carbonate being weighed for the standard of 650g with the quality of zinc, it is molten to be configured to zinc
Liquid, it is 7.0-7.3 that ammonium hydroxide, which is added, and adjusts pH, solution is then warming up to 75 DEG C, then weigh for the standard of 1120g with the quality of iron
Ferric nitrate is configured to ferrous solution, is then slowly poured into ferrous solution in zinc solution with the feed rate of 5.5ml/min, is formed
Then co-precipitate dries co-precipitate at 100 DEG C, obtain dry nanoscale zinc ferrite；
S2, it prepares desulfurizing agent: 70g nanoscale zinc ferrite, 20g sodium carboxymethylcellulose and 10g copper oxide is mixed with water
Kneading and compacting is carried out after closing uniformly, is then dried obtained mixture at 110 DEG C, drying time 2h, drying is obtained
Semi-finished product, then roast semi-finished product at 190 DEG C, and calcining time 2h obtains desulfurizing agent.
Embodiment 2
Embodiment 2 is related to a kind of desulfurizing agent of purification removing hydrogen sulfide, and desulfurizing agent is specifically prepared as follows:
S1, it prepares nanoscale zinc ferrite: zinc nitrate being weighed for the standard of 650g with the quality of zinc, zinc solution is configured to, adds
Entering ammonium hydroxide to adjust pH is 7.2-7.5, solution is then warming up to 70 DEG C, then weigh phosphoric acid with the quality of iron for the standard of 1120g
Iron is configured to ferrous solution, is then slowly poured into ferrous solution in zinc solution with the feed rate of 5ml/min, forms co-precipitation
Then object dries co-precipitate at 100 DEG C, obtain dry nanoscale zinc ferrite；
S2, desulfurizing agent is prepared: after mixing by 75g nanoscale zinc ferrite, 20g attapulgite and 5g nickel oxide water
Kneading and compacting is carried out, is then dried obtained mixture at 100 DEG C, drying time 3h obtains dry semi-finished product, so
Semi-finished product are roasted at 200 DEG C afterwards, calcining time 2h obtains desulfurizing agent.
Embodiment 3
Embodiment 3 is related to a kind of desulfurizing agent of purification removing hydrogen sulfide, and desulfurizing agent is specifically prepared as follows:
S1, it prepares nanoscale zinc ferrite: zinc sulfate being weighed for the standard of 650g with the quality of zinc, zinc solution is configured to, adds
Entering ammonium hydroxide to adjust pH is 7.6-7.9, solution is then warming up to 80 DEG C, then weigh sulfuric acid with the quality of iron for the standard of 1120g
Iron is configured to ferrous solution, is then slowly poured into ferrous solution in zinc solution with the feed rate of 5ml/min, forms co-precipitation
Then object dries co-precipitate at 100 DEG C, obtain dry nanoscale zinc ferrite；
S2, it prepares desulfurizing agent: 75g nanoscale zinc ferrite, 15g attapulgite and 10g nickel oxide is uniformly mixed with water
After carry out kneading and compacting, then obtained mixture is dried at 110 DEG C, drying time 2h obtains dry semi-finished product,
Then semi-finished product are roasted at 150 DEG C, calcining time 3h obtains desulfurizing agent.
Embodiment 4
Embodiment 4 is related to a kind of desulfurizing agent of purification removing hydrogen sulfide, and desulfurizing agent is specifically prepared as follows:
S1, it prepares nanoscale zinc ferrite: basic zinc carbonate being weighed for the standard of 650g with the quality of zinc, it is molten to be configured to zinc
Liquid, it is 7.8-8.0 that ammonium hydroxide, which is added, and adjusts pH, solution is then warming up to 75 DEG C, then weigh for the standard of 1120g with the quality of iron
Ferric phosphate is configured to ferrous solution, is then slowly poured into ferrous solution in zinc solution with the feed rate of 6ml/min, is formed altogether
Then sediment dries co-precipitate at 100 DEG C, obtain dry nanoscale zinc ferrite；
S2, it prepares desulfurizing agent: 80g nanoscale zinc ferrite, 15g bentonite and 5g lanthanum nitrate being uniformly mixed with water laggard
Row kneading and compacting, then dries obtained mixture at 110 DEG C, and drying time 2h obtains dry semi-finished product, then
Semi-finished product are roasted at 190 DEG C, calcining time 2h obtains desulfurizing agent.
Embodiment 5
Embodiment 5 is related to a kind of desulfurizing agent of purification removing hydrogen sulfide, and desulfurizing agent is specifically prepared as follows:
S1, it prepares nanoscale zinc ferrite: basic zinc carbonate being weighed for the standard of 650g with the quality of zinc, it is molten to be configured to zinc
Liquid, it is 7.8-8.0 that ammonium hydroxide, which is added, and adjusts pH, solution is then warming up to 75 DEG C, then weigh for the standard of 1120g with the quality of iron
Ferric phosphate is configured to ferrous solution, is then slowly poured into ferrous solution in zinc solution with the feed rate of 5.5ml/min, is formed
Then co-precipitate dries co-precipitate at 100 DEG C, obtain dry nanoscale zinc ferrite；
S2, desulfurizing agent is prepared: after mixing by 90g nanoscale zinc ferrite, 5g attapulgite and 5g nickel oxide water
Kneading and compacting is carried out, is then dried obtained mixture at 110 DEG C, drying time 2h obtains dry semi-finished product, so
Semi-finished product are roasted at 190 DEG C afterwards, calcining time 2h obtains desulfurizing agent.
Embodiment 6
Embodiment 6 is related to a kind of desulfurizing agent of purification removing hydrogen sulfide, and desulfurizing agent is specifically prepared as follows:
S1, it prepares nanoscale zinc ferrite: basic zinc carbonate being weighed for the standard of 650g with the quality of zinc, it is molten to be configured to zinc
Liquid, it is 7.8-8.0 that ammonium hydroxide, which is added, and adjusts pH, solution is then warming up to 75 DEG C, then weigh for the standard of 1120g with the quality of iron
Ferric phosphate is configured to ferrous solution, is then slowly poured into ferrous solution in zinc solution with the feed rate of 5.5ml/min, is formed
Then co-precipitate dries co-precipitate at 100 DEG C, obtain dry nanoscale zinc ferrite；
S2, desulfurizing agent is prepared: by 80g nanoscale zinc ferrite, 10g carboxymethyl cellulose, 5g silica solution and 5g lanthanum nitrate
Kneading and compacting is carried out after mixing with water, then dries obtained mixture at 110 DEG C, and drying time 2h is obtained
Dry semi-finished product, then roast semi-finished product at 190 DEG C, and calcining time 2h obtains desulfurizing agent.
Embodiment 7
The present embodiment is related to a kind of desulfurizing agent, is in place of this comparative example and the difference of embodiment 4, prepares nanoscale ferrous acid
When zinc, reaction temperature is 50 DEG C, charging rate 10ml/min.
Comparative example 1
This comparative example is related to a kind of desulfurizing agent, is in place of this comparative example and the difference of embodiment 4, when preparing desulfurizing agent,
This comparative example is roasting will to be dried again after 80g nanoscale zinc ferrite and 20g attapulgite kneading and compacting.
Comparative example 2
This comparative example is related to a kind of desulfurizing agent, is in place of this comparative example and the difference of embodiment 4, when preparing desulfurizing agent,
This comparative example is roasting will to be dried again after 65g nanoscale zinc ferrite and 10g attapulgite and 25g nickel oxide kneading and compacting
It burns.
Comparative example 3
This comparative example is related to a kind of desulfurizing agent, is in place of this comparative example and the difference of embodiment 4, when preparing desulfurizing agent,
This comparative example is roasting will to be dried again after 90g nanoscale zinc ferrite and 4g attapulgite and 1g nickel oxide kneading and compacting.
Comparative example 4
This comparative example is related to a kind of desulfurizing agent, is purchased from market, carries out component analysis, main component is iron oxide, and carrier is
Aluminium oxide, in terms of the gross mass of desulfurizing agent, iron oxide content 50wt%
Comparative example 5
This comparative example is related to a kind of desulfurizing agent, is purchased from market, carries out component analysis, and main component is zinc oxide and oxidation
Iron, wherein zinc oxide content 40wt%, iron oxide 30wt%, remaining is a kind of clay in terms of the gross mass of desulfurizing agent.
Test example
In order to prove that heretofore described removing hydrogen sulfide technical effect, the present invention devise following experimental example to above-mentioned reality
The performance for applying removing hydrogen sulfide desulphurization agent described in a 1-7 and comparative example 1-5 is measured:
The intensity, water resistance of the desulfurizing agent of the removing hydrogen sulfide provided by testing example 1-7 and comparative example 1-5,
Working sulfur capacity and surplus to unstrpped gas desulfurization after cure hydrogen.
The determination condition of intensity are as follows: choose 20,4-5mm length sample, measured on intensity meter, remove sample knot
The biggish value of error in fruit, the mean intensity for calculating sample are included in table 1.
The determination condition of water resistance are as follows: weigh 50g sample, soaked 24 hours, whether observation sample argillization phenomenon occurred, tied
Fruit is included in table 1.
The determination condition of working sulfur capacity are as follows: desulfurizing agent 1ml is loaded in desulfurization at normal-pressure device, reaction temperature is room temperature, former
Expect in gas, the content of hydrogen sulfide is 1%, and the content of hydrogen sulfide is measured using gas chromatography in gas, passes through chemical analysis
Working sulfur capacity is calculated, the results are shown in Table 1.
The experimental result of the desulfurizing agent of each embodiment of table 1. and comparative example
| Intensity/(Ncm-1) | Working sulfur capacity/% | H2S precision/ppm | Water resistance | |
| Embodiment 1 | 108.74 | 31.56 | 0.01 | Non- argillization |
| Embodiment 2 | 107.36 | 30.58 | 0.01 | Non- argillization |
| Embodiment 3 | 109.65 | 31.89 | 0.01 | Non- argillization |
| Embodiment 4 | 110.32 | 33.56 | 0.01 | Non- argillization |
| Embodiment 5 | 108.56 | 31.41 | 0.01 | Non- argillization |
| Embodiment 6 | 106.98 | 30.26 | 0.01 | Non- argillization |
| Embodiment 7 | 79.69 | 25.16 | 0.01 | Non- argillization |
| Comparative example 1 | 54.36 | 19.56 | 0.01 | Argillization |
| Comparative example 2 | 55.23 | 18.32 | 0.01 | Argillization |
| Comparative example 3 | 50.36 | 17.56 | 0.01 | Argillization |
| Comparative example 4 | 53.62 | 19.39 | 0.01 | Argillization |
| Comparative example 5 | 50.23 | 17.56 | 0.01 | Argillization |
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of desulfurizing agent for removing hydrogen sulfide, which is characterized in that in parts by weight, including following raw material:
70-90 parts of nanoscale zinc ferrite
5-20 parts of binder
5-10 parts of transition metal promoter.
2. desulfurizing agent according to claim 1, which is characterized in that the binder includes attapulgite, carboxymethyl cellulose
At least one of element, silica solution, kaolin, sheep dry ground and bentonite.
3. desulfurizing agent according to any one of claim 1 or 2, which is characterized in that the transition metal promoter includes
At least one of copper oxide, nickel oxide, lanthanum sesquioxide and lanthanum nitrate.
4. a kind of preparation method of desulfurizing agent as claimed in any one of claims 1-3, which is characterized in that including following step
It is rapid:
By nanoscale zinc ferrite, binder and transition metal promoter kneading and compacting after mixing, after drying, roasting
To desulfurizing agent.
5. the preparation method according to claim 4, which is characterized in that the nanoscale zinc ferrite is prepared according to following steps
It obtains:
Zinc compound is prepared into zinc solution, and it is 7-8 that Ammonia substance, which is added, to adjust pH, and solution is warming up to 70-80 DEG C, it will
Iron containing compounds are configured to ferrous solution, and ferrous solution is poured into zinc solution with the rate of 5-6ml/min, form co-precipitation
Object obtains nanoscale zinc ferrite after drying.
6. preparation method according to claim 5, which is characterized in that the Ammonia substance is ammonium hydroxide, ammonium hydrogencarbonate, primary
One or more of amine, secondary amine, tertiary amine.
7. according to the described in any item preparation methods of claim 5 or 6, which is characterized in that the zinc compound is nanometer nitre
At least one of sour zinc, alkaline carbonic acid zinc and zinc sulfate.
8. the preparation method according to any one of claim 5-7, which is characterized in that the iron containing compounds are nanometer nitre
At least one of sour iron, ferric sulfate and ferric phosphate.
9. the preparation method according to any one of claim 4-8, which is characterized in that drying temperature is 100-110 DEG C, is done
The dry time is 2-3h.
10. the preparation method according to any one of claim 4-9, which is characterized in that maturing temperature is 150-200 DEG C,
Calcining time is 2-3h.
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| CN114873633A (en) * | 2022-05-05 | 2022-08-09 | 山东昌邑石化有限公司 | Method and system for preparing zinc sulfide and ammonia water |
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